Ruby, diamond and enamel geometric bird brooch by Cartier, London,

the stylised kookaburra modelled in profile, with a leaf-carved ruby to the body, diamond set ground, a cabochon ruby eye, the three tail feathers in diamonds, calibre rubies and black enamel, enamel accents and to the beak, signed 'Cartier London'
Length 4cm / 1 5/8''
Weight: 5g